Car truck



June 4. 1929- y w. H. MussEY CAR TRUCK Filed Dec. 5. 1927 2 Sheets-Sheet l 'll/@fa WZZZ'Q??? June 4, 1929. w. H. MUssEY 1,716,146

CAR TRU CK Filed D90. 5, 1927 2 Sheets--Sheeil 2 mcM- :144 A sfL/OTTL Patented June 4, 1929.

UNITES@ STATES,

PA TEN T -'FiFffll-CE.

WILLIAM II. ivIUssRY, yor oHIcAGd ILLINOIS, AssIGNoR rro rULLMAN-CAR AND MANUFACTURING CORPORATION, or CHICAGO, ILLINOIS, A CORPORATION or CIAR TRUCK.

Application led-December', 1927. Serial'No. 237,841.

-My invention relates. to car trucks employing a plural-ity of spaced bolsters extending transversely ofthe truck and connected by.- a center-plate supporting spider .or center 5 bolster extending longitudinally of the truck. Heretofore, the centerspider, when for-med separatelyfrom the transverse holsters, was usuallyrigidly connected to. these members by rivets or bolts, but as a consequence of the l operations of train service,for because of inequalities in the parts themselves, or inaccuracies in the location' of rivetor bolt holes, the desiredrelation of .associated parts was'eifecte'd or maintained with difficulty. l Such defects developed serious derangement of the truck s'tructuieand resulted .ultimately in the failurey vof the parts to function properly.

To overcome the above notedand other deficiencies in trucks of similar design it is the purpose of this invention to provide means forl assembling the center spider and associated bolsters accurately and' expeditiously by the use of interengaging lugs: and sockets formed with sai'd spider andfbolsters and designed' and disposed to insure the proper relation between the members thus connected and contiguous truck frame members.

An importanty object of the, invention is to provide means for relieving the removable fastening means of the stresses to which. they would otherwise be subjected.

Afurther Object is to provide interengaging means separate from but supplementing the'fastening means for preventing'` relative lateral movement between center bolster and associated transverse membersof the truck.

The foregoing and other objects yare attained by the mechanism illustrated in the accompanying drawings, in which- Fig. 1 is a plan view of a truck equipped with the invention;

Fig. 2 is a side elevationalz and sectional view taken on line'Q-Q, Fig. 1, looking in the direction indicated by the arrows, showing the interlockingl connection betweenthe center bolster and associatedY transverse inembers' F iig. 3 is a transverse verticalsectional view taken onA line 8 3, Fig. l, looking in the direction indicated by the arrows, further showing the connectionv between the center bolster and one of the transverse elements of the truck;

, preferably 4 is a fragmentary view in verticalsection takeny on: line 4 4, Fig.' '3,V showing on an enlarged scale the` character ofl the [joint formed between an end: of? the center bolster and one of the-.transverse members of the truck;

Fig. 5 is a perspective undersidevew of one of the bifurcations of the center bolster formed withvtlie interlockingflug; of my invention; and

Fig. is aperspective View'v ofthe upper side of one oftlietransverseelements recessed tov receive thefadj acent lugA onlcenter bolster. In the drawings, 10 representszthe side frame of the1tru`ck,;11 the inner, and `12thfe= outer connecting transverse transoms between which are mounted the transverse bolstersl', connected by the center bolster or` spiderV 14 supportingithe ycenterplatel. The spider 14y transmits the body thrust 'from tlie center plate 15 to bothtransversebolstersfl' siinu-ltaneouslyfl throughfthe v medium f of lugs 116,. elongated and formed integral with armsfl of the spider casting.` v rlhe llugs 16 arenestejd in correspondingsockets.18in the topk webs 19 of therbolstersil, thelugsand the respective sockets` being tapered along oneV of their sides-to insure positive engagement between contiguous' faces ofv the,i respective lugs landY sockets.

The effect of the body thrust upon thextruckv is to cause a*l slight movement .of the bolsters 13 towar'd and awa-y from the respectively adjacent outer connecting tra-nsoms lf2. This movement results from.' the yielding action of the bolster supporting springs 9 permitting the holsters to `move laterally within the range; of normal clearances 5l provided betweenl they bolster and transom niembers,iandA continues untilf the tractive effort ofthe locomotive is transmitted to the truck wheels-by the` refv y sultant engagementof tliebolsters andl transoms. To prevent abnormal movement of the holsters and possible interference betweenbolsters and side arms of swing hangers-8,. the impact faces of transoms 12 and the.

holsters 13 areprotectedfby frictionplates 7 and 6, respectively, which are'rene-wed when .worn and the clearances between. themhave becomeexcessive. The clearances are preserved by the interlocking ofspider 14 and bolsters 13 andthe maintenance at all times of the fixed rectangular `relation between members of the bolster assembly is assured by the nesting of spider lugs 16 with bolster sockets 18 above noted, whereby the bolsters 13 are held spaced apart a predetermined distance by the bolster spider 14 when assembled, and independently of the removable bolts 24 as will hereinafter appear.

Elongated sockets 18 are formed as indicated in Iligs. 4 and 6, with opposite side walls 2O and 21 and bottom connecting wall 22 dcfining sockets havin@` open ends communicating with respectively adjacent core openings 23 at opposite ends of the sockets as shown in Figs. 1 and 6. Sockets thus formed and positioned between core openings23 in t-he bolster webs 19, lend themselves to the use of planers or millers capable of taking a. continuous cut from end to end of the socket between the core holes 23, insuring uniformly fiat thrust areas for the bolster lugs 16.

The extended bearing surfaces afforded by the elongated lugs 16 and sockets 18 are supplemented by a plurality of removable retaining bolts 24 arranged upon opposite sides of the respective lugs and sockets and having a bearing in registered openings 25 and 26 in the top and bottom webs 19 and 27, respectively, of the bolsters 13, and in similar openings 28 inthe center bolster arm 17, as best shown in Figs. 1 and 4 of the drawings. The

bolts'are fitted with threaded holding nuts" 29 seated against the underside of bolster bottom web 27, the bolt heads 30 finding a bearing upon the upper sides of the center arms 17 of the center bolster spider 14. lith the greater length of the bolts disposed below the bearings in openings 25 in the top webs 19 of the bolsters 13, the relatively short portions of the bolts engaging the bearings 28 in center' bolster arms 17 present rigid securing means for the associated bolster mem* bers an provide effective thrust resisting elements designed to supplement the lugs 16 and sockets 18 in the distribution of stresses set up in excess of those imposed upon the lugs. The disposition of lugs 16 and sockets 18 between respective bolt openings 28 and 25 insures direct transmission of forces from lugs to bolts in either direction of train movement to prevent relative displacement of center and transverse bolster members.

The' invention is of especial value when associated with locking center pins 31 to prevent accidental displacement of car truck or body resulting from derailment or collision. The particular embodiment of the locking pin shown is covered in Patent #1,402,972, issued January 10, 1922, to Milton E. Shaver, but any approved design of locking pin may be substituted forthat indicated, provided only that it be of suflicient proportions to prevent relative horizontal or vertical separation of car body l 32 and truck bolster spider 14. lilith the spider securely locked to the car body and the spider lugs 16 engaging sockets 18 of the respective transverse bolsters 13, complete unity of action isV afforded to avoid the telescoping of cars heretofore incident to collision because of the failure of the bolts or rivets securing the spider 14 to associated members of the truck. The combined resistance to relative horizontal displacement of truck and car body afforded by the locking center pin 31 and interengaging truck spider 14 and transverse bolstersk 13, elli'ectually prevents the over-riding ofthe platforms of' adjacent cars since the trucks are held from movement inwardly from their normal positions even thoughy spider and bolster connecting bolts 24 should fail under the extreme disruptive forces of impact.

Vliat I claim is:

1. In a car truck, a pair of bolsters spaced apart and extending transversely of the truck, a connecting longitudinal bolster having interlocking engagement with said transverse bolsters and provided with depending'lug portions, and open end socket portions integral with the transverse bolsters for receiving said lugs. c

2. In a car truck, a pair of bolsters spaced apart .and extending transversely ofv the truck, a connecting longitudinal bolsterV having interlocking engagement with said transverse bolsters and provided with extended depending lug portions, and elongated socket portions integral with the'transverse bolsters for receiving said lugs.`

3. In a car truck, a plurality of transverse bolster elements spaced apart and provided with core openings spaced longitudinally of the respective bolsters, a longitudinal bolster connecting said transverse bolsters Vhaving' dependingterminal lug portions, and socket openings terminating in thecore openings 'of the transverse bolsters adapted to receive transverse bolsters having terminal lug portions adapted to engage said sockets.

6. In a car truck, a pair of bolsters spaced apart and extending transversely ofA the truck, a connecting longitudinal bolster having interlocking engagement with said transverse bolsters and provided with ex tended depending lug portions, and open-end socket portions integral with the transverse bolsters for receiving said lugs.

7. In a car truck, a plurality of bolsters arranged transversely of the truck and respectively provided With elongated tapered socket portions having open ends, and a longitudinal bolster connecting said transverse lbolsters having terminal lug portions adapted to engage said sockets.

8. In a car truck, a plurality of bolsters arranged transversely of the truck and re- 10 spectively provided With elongated open-end socket portions terminating in core openings extending longitudinally of said bolsters, a longitudinal bolster connecting said transverse bolsters having terminal lug portions adapted to engage said sockets, and removable connecting devices disposed on opposite sides of said lugs and sockets.

In Witness whereof I have hereto set my hand this 26th day of November, 1927.

WILLIAM H. MUSSEY. 

